using System;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.Extensions.Diagnostics.HealthChecks;
using Microsoft.Extensions.Logging;
using Volo.Abp.DependencyInjection;

namespace TenantManagementService.HttpApi.Host.HealthChecks;

/// <summary>
/// 租户管理服务健康检查日志记录器
/// </summary>
internal static partial class TenantManagementHealthCheckLogger
{
    [LoggerMessage(0, LogLevel.Debug, "租户管理服务健康检查开始")]
    public static partial void HealthCheckStarted(ILogger logger);

    [LoggerMessage(1, LogLevel.Information, "租户管理服务健康检查成功")]
    public static partial void HealthCheckSuccess(ILogger logger);

    [LoggerMessage(2, LogLevel.Error, "租户管理服务健康检查失败 - {Message}")]
    public static partial void HealthCheckFailed(ILogger logger, string message);
}

/// <summary>
/// 租户管理服务健康检查
/// </summary>
internal class TenantManagementHealthCheck : IHealthCheck, ITransientDependency
{
    private readonly ILogger<TenantManagementHealthCheck> _logger;

    public TenantManagementHealthCheck(ILogger<TenantManagementHealthCheck> logger)
    {
        _logger = logger;
    }

    public Task<HealthCheckResult> CheckHealthAsync(HealthCheckContext context, CancellationToken cancellationToken = default)
    {
        try
        {
            // 使用优化的LoggerMessage记录开始日志
            TenantManagementHealthCheckLogger.HealthCheckStarted(_logger);

            // TODO: 实现租户管理服务的健康检查逻辑
            // 可以检查：
            // 1. 数据库连接状态
            // 2. 租户数据隔离状态
            // 3. 缓存连接状态
            // 4. 租户注册表状态
            // 5. 多租户配置状态

            // 使用优化的LoggerMessage记录成功日志
            TenantManagementHealthCheckLogger.HealthCheckSuccess(_logger);

            return Task.FromResult(HealthCheckResult.Healthy("租户管理服务运行正常"));
        }
        catch (Exception ex)
        {
            // 使用优化的LoggerMessage记录失败日志
            TenantManagementHealthCheckLogger.HealthCheckFailed(_logger, ex.Message);
            return Task.FromResult(HealthCheckResult.Unhealthy("租户管理服务异常", ex));
        }
    }
}